It works! Cant believe it. See, this is what I love about the 770: I bought a device for surfing the web and reading mails - now its a picture editing tool, a chat client and an ebook-reader. Without extra cost ;-)

Thank you, teemu, for pointing me to this application.

I have to dig into the pil-documentation a bit. There's more than resizing... But for a start: Is it possible to give only one parameter (width) when resizing and have pil simply keep the ascpect ratio? From what I see, (size) always requires width and height. What I would like to do first is go through a directory of pictures and shrink all of them to 120px width, keeping the aspect ratio, and save them as filename-120.jpg; thats hard if you dont know what to use as height for each picture...